Gustav Möller GmbH from the German town of Limeshain is a mechanics company with over 40 years of experience.
The focus of production is on turned parts made of stainless steels and various special materials such as Hastelloy®, Inconel® or Monel®. The company specialises in individual pieces and small series and also offers milling and deep-hole drilling work, as well as CNC-milled components, using partner companies.
Turned and deep-hole drilled protective sleeves are manufactured for a nuclear application. These sleeves have an outer diameter of approx. 6 mm in the deep-hole drilled area with a wall thickness of approx. 1 mm, which is similar to the dimensions of a drinking straw. The end customer requires a proof of low eccentricity in this area, i.e. the most even distribution of the wall thickness possible
over the circumference.
KARL DEUTSCH was able to successfully solve this demanding testing task with the ECHOMETER 1077 and a high-frequency 22 Mhz delay line probe. For better guidance of the probe (vertically and centrally on the highly curved surface), our customer manufactured a centering aid in his workshop. With this setup, the wall thickness of the sleeve can be measured precisely all around. While the component is slowly rotated by hand in a prism, the wall thickness value can be observed. The largest and smallest wall thickness values are recorded. During measurement, the image of the echo sequence can be checked at any time to rule out faulty measurements caused by poor coupling.
Our conclusion: This was a good cooperation despite difficult conditions! Due to Corona travel restrictions, this challenging testing task was successfully solved by the mutual exchange of sample parts, a loaner device provided by us and some telephone and video conferences.